Hello David,
I just noticed that this error only shows up when 'DEBUG = yes' is set in the configuration file. Everything works when debugging is turned off but I think this could be an issue for anyone trying to run a debugger on the code.
I am guessing you are seeing an instance of this issue:
https://bitbucket.org/einsteintoolkit/tickets/issues/2781/fix-bug-in-debug-m...
A patch has been applied to the development version already:
https://bitbucket.org/cactuscode/cactus/commits/e185dc0c014d148908054ff34e6a...
Or alternatively, in the same function, change (back)
#ifndef CCTK_DEBUG if(!presync_only) return true; #endif
to
if(!presync_only) return true;
which is what it was in the previous version (and which is save).
Yours, Roland